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Finding the Fourth Proportional to 70,640.64, 97,570.32 and 52,814.80

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Solution

The fourth proportional to 70,640.64, 97,570.32 and 52,814.80 is: 72,948.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,640.64 : 97,570.32 = 52,814.80 : x
  2. Step 2: Convert to fraction form
    70,640.64/97,570.32 = 52,814.80/x
  3. Step 3: Cross multiply
    70,640.64x = 97,570.32 × 52,814.80
  4. Step 4: Simplify right side
    70,640.64x = 5,153,156,936.74
  5. Step 5: Solve for x
    x = 5,153,156,936.74/70,640.64
  6. Step 6: Final answer
    x = 72,948.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.